M & P 15-22 Safety Issues

I posted here a while back about my 15-22 having an out of battery discharge. My uncle and I had brought it to the hunting lease with us while doing some scouting. We decided to shoot a few rds while we were there. We didn't have hearing protection because it's 22LR and we didn't plan to shoot too much. He was shooting, while I was standing a few feet away at his 5 o'clock, and had an OOBD during one of his first few shots. The explosion was probably the loudest thing I've ever heard in my life. My ears rang for a few days after that. I'll never not wear hearing protection again regardless of what I'm shooting. Not sure what caused the OOBD, but it could have a lot to do with the ammo I was shooting. We were shooting Rem. Golden Bullets at the time. I later found out from S&W that the 15-22 is really picky about what time of ammo you feed it. Since then I've ran nothing but premium ammo through it and haven't had any issues.

I got that news letter from my range in laffy as well. Sucks I just picked up a new mlok version. I had read on he S&W forum about the runaway thing and it seems the range officer did some work on the gun and then it did its runaway. I forget the reason he did work on the gun for someone at the range. They also said it might be the trigger group got loose from the pins walking or the holes loosening up. I have a Elftmann trigger in it now and is pretty locked in place. I'll be aware of it tho.